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A high-resolution time-depth view of dimethylsulphide cycling in the surface sea

AuthorsRoyer, S.-J. ; Galí, Martí ; Mahajan, A.S.; Ross, Oliver N. ; Pérez, G.L.; Saltzman, Eric S.; Simó, Rafel
Issue DateAug-2016
PublisherNature Publishing Group
CitationScientific Reports 6: 32325 (2016)
AbstractEmission of the trace gas dimethylsulphide (DMS) from the ocean influences the chemical and optical properties of the atmosphere, and the olfactory landscape for foraging marine birds, turtles and mammals. DMS concentration has been seen to vary across seasons and latitudes with plankton taxonomy and activity, and following the seascape of ocean’s physics. However, whether and how does it vary at the time scales of meteorology and day-night cycles is largely unknown. Here we used high-resolution measurements over time and depth within coherent water patches in the open sea to show that DMS concentration responded rapidly but resiliently to mesoscale meteorological perturbation. Further, it varied over diel cycles in conjunction with rhythmic photobiological indicators in phytoplankton. Combining data and modelling, we show that sunlight switches and tunes the balance between net biological production and abiotic losses. This is an outstanding example of how biological diel rhythms affect biogeochemical processes
Description13 pages, 7 figures, tables, supporting information https://dx.doi.org/10.1038/srep32325
Publisher version (URL)https://dx.doi.org/10.1038/srep32325
Identifiersdoi: 10.1038/srep32325
issn: 2045-2322
e-issn: 2045-2322
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